Targeting a hunting or sports weapon

ABSTRACT

The invention concerns a method for targeting hunting or sports weapons, where a shooting person fires a number of shots. The invention also concerns an auxiliary device for performing the method. There is provided an adjusting bench for use by adjusting sights when targeting rifles, including a support holder in which the rifle is fastened with a support holder of rotary seated mainly about a horizontal and a vertical axis, whereby it becomes possible to fix the rifle directed towards the sighting point on a target provided at the distance at which the rifle is targeted. After determining and possibly marking a mean impact point on the target, it will thus be possible, while holding the rifle in the adjusting bench, to perform an accurate adjustment of the sights and simultaneously to follow the movement of the sight while operating the sight adjusting means.

BACKGROUND OF THE INVENTION

The present invention concerns a method for targeting hunting or sportsweapons, where a shooting person fires a number of shots. The inventionalso concerns an auxiliary device for performing the method.

In connection with targeting rifles, which is a suitable representativeof this type of hunting or sports weapon, the purpose is primarily toachieve coincidence between the sighting point and the point of impacton a target disposed at a given distance from the place where the shotis fired.

Usually, the following procedure is used in connection with targetingrifles. The shooting person places himself in a suitable shootingposition and fires a number of shots (3-5), after which the mean impactpoint in the target for the fired shots is performed. In that connectionit is remarked that by targeting, ammunition of the same type and alsoof the same packing/lot is to be used, since this will reduce theinfluence on the dispersing of the fired shots from error sources comingfrom different powder storage/mixture and weight of bullet.

From DE GM 66 10 785 is known a device, enabling quickly and with smallconsumption of ammunition to set the sighting instruments of rifles withgreat accuracy to the real shooting ability of the barrels. On theshooting range is fired an accurately directed shot against a target.The inhole is marked on the target, e.g. by attaching a mark which isclearly seen at a distance. Subsequently, the rifle is clamped in thedevice mentioned in DE GM 66 10 785. With its sighting instrument, e.g.notch and fore sight, the rifle is set accurately on the centre of thetarget, and the device is clamped so that the rifle is fixed immovablyin this position. Now the sighting instrument, e.g. notch and fore sightor the cross hairs of the, is set precisely on the inhole. A trial shotwill now show whether the desired effect, a precise shot, is achieved.This document shows no adjusting means and thereby does not enablesetting the sighting point on the mean impact point. All adjustmentoccurs while the rifle is free, i.e. before the rifle is clamped in thedevice. This implies greater uncertainty.

After calculating the mean impact point, it will be possible todetermine how much the sighting means are to be corrected in lateraldirection and vertical direction by means of the sight adjusting meansin order to make the sighting point and the impact point coincide. Inthat connection it may be said that normally it is aimed at that suchadjusting mechanisms are having a very uniform equidistance which isdefined in clicks, where a click corresponds to a given displacement ofthe sighting point at a given distance. The direction of thedisplacement of the sighting point is given by the rotational directionin which the sighting adjusting mechanism is turned.

After determining or marking the mean impact point, it will thus, asalready mentioned under adjustment, be possible to perform a change ofthe sighting means, so that these will coincide in the mean impactpoint.

In the following, it is to be understood so that, when speaking ofsighting means, there may be the commonly known peep sight means oroptical sight means in the form of telescopic sights, red point sightmeans, etc. The principles for the adjusting sight means are largelyidentical, but as it will appear from the subsequent, particularly theoptical sight means may be encumbered with certain error sources due toproduction mistakes, such as faulty grinding of the lenses, or defectsin the seats in which the optical lenses are mounted.

After having performed adjustment of the sights by adjusting e.g. thesight adjusting screws of the telescope, of which there is typicallyfound performance of horizontal displacement of the sighting means, andperformance of a vertical displacement of the sighting means, accordingto need. After the performed adjustment it is usual that the shootingperson fires additional shots (3-5), and subsequently and in the sameway as described above, calculation of the means point of impact isperformed, and it considered whether the sighting point and the meanpoint of impact are reasonably coinciding. If this is the case, therifle is regarded as being targeted, but if there is too large deviationbetween the sighting point and the mean point of impact, furtheradjustment of the sights is performed as mentioned above, and this isrepeated until the shooting person is satisfied.

The said work with adjusting/targeting rifles with telescopic sights maybe protracted and tiresome for the shooter, and if the equidistancebetween the clicks performed by the adjusting means for the sights isnot uniform, the work with targeting (hunting) rifles provides with suchtelescope may be even very drawn-out and problematic for the one doingthis work. This is a consequence of appearing weariness, the uncertaintyof own shooting skills, consumption of expensive ammunition and takingup excessive much time on the shooting range where the targeting isperformed, all very stressing elements sometimes entailing that theshooter/rifle owner chooses to let the rifle target by a professional orpostpones the targeting to a later occasion, which, of course, is notacceptable.

Unfortunately, it has also been realised that many rifle owners are sobad marksmen that it is difficult to get usable mean impact points. Thusit will be necessary that the shooting person fires a larger number ofshots until the quality of the fired shots enable calculation of a meanimpact point. Also, the fact that more than the normal 3-5 shots are tobe fired for determining each mean impact point will be a source oferror in connection with targeting the rifle as the concentrationability of the shooting person is reduced.

A further source of error connected with targeting particularly huntingrifles consists in the fact that the barrel in common rifles usually arenot intended for firing several series of shots, and this will causeheating of the barrel, which by itself may cause change in the locationof the shots, as the intrinsic spreading of the rifle is increased.

A further error factor is that some telescopic sights are technicallyunstable in the aforementioned clicks in connection with adjusting thesights. The reason for this may be defects in the lens seating and/ordefective grinding of the glass constituting the lenses. Therefore, itmay occur that the click for performing horizontal displacement of thesights also causes a vertical displacement hereof, and reversely.Besides, a calculated number of clicks do not provide the expecteddisplacement of the sights in horizontal/vertical direction. In thatconnection, the typical reaction will be that further turning of thesight adjusting means (more clicks) are performed, but this can/willentail that adjusting the sights suddenly also will react on the firstclicks, whereby the change of the position of the sights becomes toolarge in relation to what was expected.

The above problems may be further intensified in case of telescopicsights with variable magnification. As already mentioned, a bad lensseating or actual defective grinding of the lenses may entail that thesight moves when turning the magnification. This defect in particular isvery difficult to reveal, as the shooting person most often thinks thatit is himself who has fired a bad shot. This, however, may be far frombeing the case. In that connection it is to be mentioned that there isan example of a brand new telescope in the medium price category withvariable magnification between greatest and least magnification movedthe sight 17 cm over a shooting range of 100 m. This is, of course,quite unacceptable, and using such a rifle will certainly imply woundingthe game which is attempted to be killed with such a rifle.

There are some actual targeting benches that may be used as aid forreducing the spreading of the shots. Here, typically shooting is donewith the rifle clamped in/resting in the bench. Experienced marksmen andshooting instructors are, however, well acquainted with the fact that itis technically impossible to target a rifle clamped in a bench and thento assume attaining the same impact point/sighting point when the benchis not used. This is due to the fact that the rifle is movingdifferently when clamped in the bench than when the shooting personoperates/holds it in a normal way when shooting. Therefore, use of thistype of targeting benches is not suitable.

The correct way of performing targeting of e.g. a hunting rifle withtelescopic sight is to fire the shots from the shooting positioncommonly used by hunting and from here fire the required number of shotsfor determining the previously mentioned mean impact point andsubsequently perform adjusting of the sights with the purpose ofachieving coincidence between the mean impact point and the sightingpoint. This method has the above error sources and may thus be verycumbersome to perform for the shooting person.

It is the purpose of the invention to indicate an auxiliary means in theform of an adjusting bench of the kind mentioned in the introduction foruse in connection with adjusting/setting the sighting means on e.g. ahunting rifle with telescope.

This purpose is achieved by an adjusting bench with the characterisingfeatures of claim 1. Before the advantages of the said adjusting benchaccording to the invention are stated, it will be discussed briefly asto which actions are performed prior to using the adjusting bench.

After a relevant shooting person has assumed the commonly used shootingposition (cf. the above), a suitable number of shots are fired with therifle, which is loaded with the same type of ammunition, from a standand against the same sighting point on a target disposed at the distanceat which the rifle is to be targeted. After the shooting, determinationand possibly marking of the mean impact point of the fired shots on thetarget is performed, and the target is left in its position in thetarget area The adjusting bench is set up in the stand area, after whichthe actual rifle is mounted in the adjusting bench by means of the firstand the second set of adjustable fastening means. Then adjustment of theadjusting bench with the now mounted rifle is performed by means of thefirst and second set of adjusting means on it so that the sights of therifle are directed towards the sighting point used when firing theshots. The rifle is thus now fixed in this position and with the sightsdirected accurately against the sighting point on the target used whenthe shots were fired.

The absolutely advantageous and quite unique feature of the adjustingbench according to the invention is the fact (while it is pre-supposedthat adjustment of the sights of the rifle is necessary if deviationbetween sighting point and mean impact point has been detected), that ina hitherto unknown, advantageous way it will be possible subsequently toperform adjusting of the sight adjusting means so that sighting pointand mean impact point will coincide during observation of the adjustingwhen the latter occurs. Since the rifle is is clamped and fixed with thesights directed against the sighting point, this means that it will bepossible for the shooting person to observe the effect of the individualclicks when operating the sight adjustment means, and by following (byvisual supervision, e.g. through the telescopic sight) how the sight isdisplaced by doing the individual clicks. It will thus be possible toperform targeting of a hunting rifle with a telescope where the click“equidistance” of the sight adjusting means is not uniform.

By the adjusting bench according to the invention, it will thus bepossible to perform targeting of a hunting rifle by only firing 3-5shots and subsequently to perform the above correction of the sightswith the rifle clamped in the adjusting bench. However, this requiresthat the shooting person is capable of firing 3-5 shots in such a waythat it will be possible to determine a mean point of impact for thefired shots. This is usually pre-supposed to be possible for mostshooting persons who own e.g. a hunting rifle.

The adjusting bench furthermore has the advantage that it can be usedfor revealing defects on telescopic sights with variable magnification,since by turning the magnification lens while the rifle is clamped inthe adjusting bench, it will be possible to ascertain whether the sightmoves when changing the magnification. If that is the case, thetelescope should be returned to the manufacturer, or the telescopeshould not be used.

In claims 3-12 are indicated different embodiments of the adjustingbench according to the invention.

Other things being equal, the adjusting bench according to the inventionwill be a decisive and revolutionary novelty among the auxiliaries usedtraditionally in connection with targeting hunting rifles and otherrifle types with diverse sights in the shape of normal peep sights oroptical sights in shape of telescopes. In particular the possibilityprovided in order to reveal, and also to compensate for, missinguniformity in the clicks in connection with the setting of the positionof the sights in horizontal and vertical direction in connection withtelescopic sights is a very decisive factor since it has never beenpossible to reveal this in connection with a traditionally used methodof targeting hunting rifles.

Furthermore, it is also crucial that the adjusting bench according tothe invention can be used for revealing structural defects on telescopeswith variable magnification.

DESCRIPTION OF THE DRAWING

The invention is explained more closely in the following with referenceto the drawing, where:

FIG. 1 is a perspective view of an adjusting bench according to theinvention, as seen obliquely from behind;

FIG. 2 shows the same as FIG. 1 but a little closer;

FIG. 3 is a close-up of the adjusting bench according to the inventionaround the adjusting means of the adjusting member;

FIG. 4 is a detail of the swivelling seat of the adjusting member on thebase of the support holder of the adjusting bench;

FIG. 5 is a perspective view seen obliquely from above of the adjustingbench with a rifle inserted therein with telescopic sight means;

FIG. 6 is a view of a target with a sighting point and a mean point ofimpact differing from that, as seen through a telescopic sight; and

FIG. 7 shows the same as FIG. 6, but where the sighting means of thetelescopic sight is adjusted to the marked mean impact point on thetarget.

In FIG. 1 is shown a perspective view of an adjusting bench 2 for use inadjusting sights 80 when targeting guns, preferably rifles 2. As itfurther appears, a rifle 4 provided with normal sights 6 and an opticalsight 8 in the form of a telescopic sight, respectively, is mounted inthe adjusting bench 2. The adjusting bench includes a support holder 10with a front end 12 defined as the end of the support holder 10 situatedclosest to the barrel mouth 14 of the rifle 4 placed in the adjustingbench 2. The support holder furthermore includes a rear end 16.

The support holder 10 is divided in two parts and includes a base 22with clamping means 24 for fastening to a support 26 which in the shownembodiment of the adjusting bench 2 is constituted by supporting legs44. At the upper side 42 of the base 22 is seen an adjusting member 28that includes a first set of adjustable fastening means 18 and a secondset of adjustable fastening means 20 disposed down at the front end 12and close to the rear end 16 of the support holder.

In the shown embodiment, close to the first fastening means 18 theadjusting member 28 is rotationally supported on the base 22 by a firstrotary connection 30 and a second rotary connection 32, respectively,about a first axis 34 and a second axis 36 that form a mutual angle. Theangle between the first axis 34 and the second axis 36 is 90° in theshown embodiment.

In the shown embodiment, the adjusting member 28 is connected oppositethe first rotary connection 30 with the base 22 by a first set ofadjusting means 38 for performing the fine adjustment by controlleddisplacement largely perpendicularly to the first axis and a second setof adjusting means 40 for performing a controlled displacement largelyperpendicularly to the second axis 36 of the relevant end 16 of theadjusting member 28.

As already stated, the angle between the first axis 34 and the secondaxis 36 constitutes an angle of about 90°. Furthermore, the first axis34 is mainly horizontally oriented and the second axis 36 has mainlyvertical orientation. As it further appears from the embodiment of theadjusting bench 2 according to the invention shown in FIG. 1, the base22 is supported by carrying legs 44 which are fastened to it by means ofclamping means 24, cf. FIG. 2, and others. It is noted that the base 22by using clamping means or the like can assume other shapes; these maye.g. be designed for mounting on a table or another firm, stable supportincluding fastening means that interact with clamping means on the base22.

The fastening means 18, 20 are constituted by interspaced, adjustableplates 46, the mutual spacing of which is adjustable by the settingmeans 48, which is typically constituted by a spindle with operatinghandle, for clamping relevant areas 50, 52, cf. FIGS. 2, 3 and 4 ofrelevant stock parts 54 of a rifle 4 between the mutually facing sides56, 58 of the plates 46.

As it most clearly appears from FIG. 3, the adjusting member 28 has afirst set of adjusting means 38 for performing a controlled fineadjustment in the shape of a vertically oriented displacement of therear end 16 of the adjusting member. The adjusting means are constitutedby a screw threaded set screw 60 that includes an operating handle 62,which set screw 60 is seated in a threaded hole 64 interacting with theset screw in the adjusting member 28. The free end 65 is, as indicatedin FIG. 3, in contact with a relevant side of the base 22.

The adjusting member 28 furthermore includes a second set of adjustingmeans for a controlled horizontal displacement of the relevant end 16 ofthe adjusting member 28. The adjusting members are also here constitutedby a threaded set screw 66 including operating handle 68. The set screw66 is seated in a threaded hole 70 in the adjusting member 28interacting with it, and the free end 71 of the set screw 66 is incontact with a relevant side of a part 72 projecting from the base 22,cf. FIG. 3.

The free end of the set screw 66 for performing the horizontaldisplacement of rear end 16 of the adjusting member 28 is held inabutment with the relevant side of the part 72 projecting from the base22 by means of a not shown spring device which is connected with a base22 and the adjusting member 28.

The use of the adjusting bench is already adequately described in theintroduction of the description, but is only to be repeated brieflyhere.

From a stand, while using a normal shooting position for a relevantshooting person, a suitable number of shots are fired from the rifle 4loaded with the same type of ammunition (and preferably from the samelot) against the same sighting point 75 on a target 76 which is disposedat the distance in which the rifle 4 is targeted, cf. FIGS. 6 and 7.After firing the shots, a mean point of impact 78 on the target 76 isdetermined for the fired shots. Then the adjusting bench 2 is set up inthe stand area. The rifle is mounted fixed in the adjustable first setof fastening means 18 and the second set of adjustable fastening means20 on the adjusting member 28, and simultaneously with the mountingthere is performed a rough adjustment of the rifle in the adjustingbench so that its sights are ‘roughly set’ in direction of the sightingpoint 75 on the target. Then is performed a fine adjustment of theadjusting bench 2 by means of the first set of adjusting means 38 for acontrolled vertical displacement of the rear end 16 of the adjustingbench 2 and the second set of adjusting means 40 for controlledhorizontal displacement of the rear end of the adjusting member 28, sothat the sights 80 of the rifle are finally directed towards thesighting point 75 used in firing the shots.

As it appears from FIG. 6, there is difference in the position in thetarget 76 of the sighting point 75 and the marked mean point of impact78. FIG. 6 shall illustrate the image viewed by the shooting person inthe situation where the rifle 4 is clamped in the adjusting bench 2 withthe sights 80 trained at the sighting point 75 which was used duringfiring the shots resulting in the marked mean point of impact 78. Thenext event is to bring the setting of the sights 80 of the telescopicsight in accordance with the marked mean point of impact 78, which isdone by turning the first set of sight adjusting means 82 for verticaladjustment of the sights and by turning the second set of sightadjusting means 84 for performing a horizontal adjustment of the sights.An example of correct adjusting is shown in FIG. 7 where the sights 80in the telescopic sight 8 are brought to correspond to the marked meanpoint of impact 78 in the target. After performing the above acts byusing the adjusting bench 2 according to the invention, the work withtargeting the rifle 4 is thus finished.

The adjusting bench will thus be usable for adjusting telescopic sights8 on rifles 4, if sight adjusting means 82, 84 in their click functionsvaries in relation to displacing the sights 80 by performing one or moreclicks. This is caused by the rifle being fixed during adjustment of theposition 80 of the sights by operating the first and second set of sightadjusting means 82, 84. It will furthermore, while effecting theadjustment of the sights, be possible for the shooting person himself tofollow how much a single click at the respective sets of sight adjustingmeans to move the sight 80 in relation to the point of impact.

By telescopes 8 with variable magnification there may also be problemswith the sights in connection with operating the magnification mechanicsin the telescope being displaced vertically or horizontally or in bothdirections. It is of course unacceptable, and using the adjusting bench2 can reveal this by clamping the rifle with the telescopic sight inquestion with the adjusting bench 2 directed towards a well-definedsighting point 75 in a target area on a target 76 and then performoperation of the magnification function of the telescope simultaneouslywith observing the position of the sights in relation to the point ofdirection.

The adjusting bench 2 can also easily be used in connection withtargeting the rifle 4 which is provided with new telescopes. This isdone by placing the rifle 4 in the adjusting bench 2 with the lock takenout, why there will be free sight through the barrel of the rifle. Therifle barrel is then directed towards a well-defined sighting point onthe target 76, and then the lock is inserted. After that, the sights 80of the telescope are adjusted so that these are also directed towardsthe sighting point 75 on the target 76. Then there will greatprobability that the target 76 is hit in connection with firing thefirst shots in connection with targeting the rifle which is otherwiseperformed as already described above.

By the invention is thus indicated an adjusting bench 2 enabling in ahitherto unseen easy and unencumbered way to perform targeting of rifleswith usual sights 6 or with optical sights 8. Targeting may in mostcases be done by firing between 3 and 5 shots, in contrast to the knowmethods where at least the double or triple number of shots are firedjust for a usual targeting of a hunting rifle. Furthermore, theadjusting bench according to the invention has great advantages asregards the possibility of contributing to revealing structural defectsin telescopes with variable magnification. During tests in connectionwith the development of the adjusting bench, the inventor has exposedthat a telescopic sight in the intermediate price category mounted on arifle 4 between the largest and least magnification had a deviation onthe position of the sights of 17 on the targeting range, in that casebeing 100 m. This is, of course quite unacceptable for a hunting rifle,but the defect would not be revealed without using the adjusting benchaccording to the invention.

1. Method for targeting hunting or sports weapons, where a shootingperson fires a number of shots and which comprises that a number ofshots are fired with the weapon (4) that the weapon (4) is mounted in anauxiliary device (2) for targeting hunting or sports weapons and thatthe sights of the weapon (6, 8, 80) are directed toward the sightingpoint (75) used at the shooting, characterised by including a number ofsteps: a) from a shooting position commonly used by the shooting person,a number of shots are fired with the weapon (4), which is loaded with aknown type of ammunition, from a stand against a sighting point (75) ona target (76) disposed at a distance at which the weapon is to betargeted; b) a mean point of impact (78) on the target (76) for thefired shots is determined; c) the weapon (4) is mounted in saidauxiliary device (2) for targeting hunting or sports weapons, theauxiliary device being set up in the stand area, and by which mountingthe weapon (4) is roughly adjusted in the auxiliary device (2) by meansof a first set and a second set of adjustable fastening means (18,20);d) the auxiliary device (2) is finely adjusted by means of first set ofadjusting means (38) for a controlled vertically oriented displacementand a second set adjusting means (40) for a control horizontallyoriented displacement, so that the sights of the weapon (6, 8, 80) aredirected toward the sighting point (75) used at the shooting; e) thesights (6, 8, 80) are rectified with the weapon (4) fixed in the finelyadjusted position, the rectifying being performed by operating a firstset of sighting adjusting means (82) for vertical adjustment of thesights and a second set of sight adjusting means (84) for horizontaladjusting of the sights, respectively, until the sighting point (75)coincides with the mean point of impact (78) determined on the target(76); f) the weapon (4) is dismounted from the auxiliary device (2) fortargeting hunting or sports weapons.
 2. Auxiliary device for targetinghunting or sports weapons, where the auxiliary device includes anomnidirectionally swivelling, at first, and lockable, subsequently,support for the weapon, in which support the weapon can be fixed,characterised in that there rough adjustment is performed at the fixing,and that there are means for fine adjustment by which fixing the weapon(4) is roughly adjusted in the auxiliary device (2) by means of a firstset and a second set of adjustable fastening means (18, 20), and wherethe means for fine adjustment are independent of the fastening means(18, 20).
 3. Auxiliary device for targeting hunting or sports weaponsaccording to claim 2, characterised in that this is constituted by anadjusting bench (2) including a support holder (10) with a front end(12) defined as the end of the support holder (10) situated nearest tothe muzzle (14) of weapon in the shape of a rifle placed in theadjusting bench (2), and a rear end (16), the support holder (10)including a set of roughly adjustable fastening means (18) and a secondset of roughly adjustable fastening means (20) disposed typically nearthe front end (12) and near the rear end (16), respectively, of thesupport holder (10) for detachable fastening of the rifle (4), where thesupport holder (10) includes a base (22) with clamping means (24) forfastening to a support (26) and at least one adjusting member (28)disposed on said base (22), of which preferably the uppermost onecarries the first or the second set of fastening means (18, 20), theadjusting member (28) near the first or the second fastening means (18,20) being rotatably mounted to the base (22) by a first rotaryconnection (30) and a second rotary connection (32), respectively, abouta first axis (34) and second axis (36) forming a mutual angle, and whichadjusting member (28) near the fastening means (18, 20) opposite therotary connection (30) is connected with the base (22) by a first set ofadjusting means (38) for a controlled displacement largelyperpendicularly to the first axis (34), and which adjusting memberincludes a second set of adjusting means (40) for a controlleddisplacement largely perpendicularly to the second axis (36) of therelevant end (12, 16) of the adjusting member (28).
 4. Adjusting bench(2) according to claim 2, characterised in that the angle between thefirst axis (34) and the second axis (36) is preferably 90°.
 5. Adjustingbench according to claim 2, characterised in that first axis (34)largely has horizontal orientation, and where the second axis (36) haslargely vertical orientation.
 6. Adjusting bench according to claim 2,characterised in that the adjusting member (28) is preferably placed atthe upper side (42) of the base (22).
 7. Adjusting bench according toclaim 2, characterised in that the base (22) includes at least threesupporting and steadily disposed carrying legs (44) fastened at theclamping means (24).
 8. Adjusting bench according to claim 2,characterised in that the fastening means (18, 20) are constituted byinterspaced, adjustable plates (46), the mutual distances of which areadjustable by adjusting means (48) for clamping relevant areas (50, 52)of stock parts (54) of the rifle (4) between the mutually facing sides(56, 58) of the plates (46).
 9. Adjusting bench according to claim 2,characterised in that the first set of adjusting means (38) for acontrolled vertical orientation displacement of the relevant end (12,16) of the adjusting member (28) are constituted by a threaded set screw(60) with an operating handle (62), the set screw (62) being mounted ina threaded hole interacting with it in the adjusting member (28), andthe free end of which (65) being in contact with a relevant side of thebase (22).
 10. Adjusting bench according to claim 2, characterised inthat the second set of adjusting means (40) for a controlledhorizontally oriented displacement of the relevant end (12, 16) of theadjusting member (28) is constituted by a threaded set screw (66) withan operating handle (68), the set screw (66) being mounted in a threadedhole (70) interacting with the former in the adjusting member (28), andthe free end of which (71) being in contact with a relevant side of apart (72) projecting from the base (22).
 11. Adjusting bench accordingto claim 10, characterised in that the free end (71) of the set screw(66) is held in contact with the relevant side of the part (72)projecting from the base (22) by means of a spring device (74) which isconnected between the base (22) and the adjusting member (28). 12.Adjusting bench according to claim 10, characterised in that the freeend (71) of the set screw (66) is rotatably mounted at the part (72)projecting from the base (22) by means of a slide bushing.